Typewriting-machine



J. E. SIMPSON.

TYPEW'RITING MACHINE.

APPLICAHON FILED usm I919.

1,346,851. 7 Patented July 20,192

UNITED STATES PATENT OFFICE.

JAMES E. SIMPSON, OF BROOKLYN, NEW YORK, ASSIGNOR '10 TYPEWRITERACCESSORIES 00., INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

vice,'which can be applied quickly and con-.

veniently to a machine by the user thereof, without requiring theservices of a skilled mechanic for its application.

Further my improvements comprise the provision of controlling meanswhereby the ribbon is actuated intermittently through the operation ofthe type bars, which in their printing strokes cause the ribbon to bemoved into contact with an inking device that communicates ink to theribbon while said ribbon is moving under the influence of the ribbonfeed mechanism; and, a still further feature of improvement consists inthe provision of means whereby the ribbon controlling means are renderedinactive relatively to the type bar movements.

In the drawing:

Figure 1 is a plan view of a portion-of an Underwood typewritingmachine, to which my improvement is applied.

Fig. 2 is a detail, inside elevation, of the re-inking device, and

Fig. 3 is a perspective detail of the same.

In describing'my' invention with reference to the accompanyin drawing,let 1 indicate a portion of the frame of an Underwood typewritingmachine, 2 the platen, 3 the guide jaws for the type bars to center thetypes at the printing point, lthe segment in which the type bars arepivoted, 5 the type bars with types 6, and 7 the ribbon spool at oneside of the machine, having ribbon 8.

My improved ribbon inking or revivifying means consists of a deviceadapted to be secured to a fixed part of the machine in such manner thatit may function to impart ink or moisture to the inking ribbon with theoperation of the machine, or maybe rendered inoperative in that respect,the putting into and out of operation being me- Speoification of LettersPatent.

Patented July 20, 1920.

Application filed August 7, 1919. Serial No. 315,895.

chanical actions which are under the control of the operator.

As shown in the drawing the device has a base portion 9 which issupported in a horizontal position by means of a. depending bracket 10,which, in an Underwood machine, may be secured to the machine by theleft hand, screw that is employed to hold the segment 4 in place, whilean upwardly and forwardly inclined arm 11, extending frombase 9, has ahorizontally disposed end portion 12, with an under turned, spacedfinger 13, to provide lodgment, between said end portion 12 and finger13, for the forwardly projecting portion of the left hand guide jaw 3,so that the device becomes rigidly secured between its engagement withthe machine by bracket' 10 and its engagement with the guide jaw 3. Themethod of adjusting and securing the device in position for; use is thusboth simple and effective.

Extending upwardly from a plate 14,

which is pivoted at 15 to the base 9, is a pivot 16, over which isslipped a washer 17, having a' flange, to revolubly support acylindrical pad or roller 18 of absorbent material, which ma besaturated with ink for re-inking purposes. The pivot 16 projects througha slot 19 in .base 9, and the plate 14 has means, as a struck up lug 20,to engage re-' spectively with opposite edges of slot 19, to thus limitthe swinging movement of plate 14 and pivot 16 in each direction. Also,the

base 9 has on its under surface, the indentations 21, with which aslight excre'scence or raised punch mark 22 on the upper surface ofplate 1 1 will register, to frictionally engage and localize said platein each of its two set desired positions at the limits of its swingingmovements. The purpose of these movement limiting means will bedescribed hereinafter.

The roller 18 may be retained in its position upon pivot 16 by a; coverplate 23, screwed upon the end of [pivot 16,. which latter is threadedfor that-purpose.

Upstanding from the 'base'9 is a ribbon guide 24, which is located'tothe left of 26, but before reaching the guide 25L it passes between thesurface of the roller 18 and an upstanding portion of a slender ,thoughstiff wire strand 27, whose opposite end engages, at 28, with the heel29 of a pawl 30, that is pivoted, at 31, to the end portion 12 of arm11; said pawl being adapted to lie either in or out, as desired, of thepath of the type bars in their operation to imprint the types, throughthe ribbon, upon a work sheet on the platen. Said wire strand has thejog 32 in its length to spacingly inclose the lug.2(), so that it servesto co-actwith said lug, under the tension of the ribbon coming from thespool, to hold said pawl, in the two set positions of plate 14, eitherin or out of the path of the type bars. A handle 33, extending forwardlyfrom plate 14, permits the manipulation of said plate to and from itsrespective set positions.

Thus, it will be seen that the operation of key levers, as 34, whichserve to actuate the type bars 5, has the effect of rocking the pawl 30every time a type -is moved by its type bar between the guide jaws 3 tocreate an impression; also that in this rocking movement of pawl 30 thestrand 27 is drawn inwardly, and, at its upstanding portion where itengages the ribbon 8, moves said ribbon at that point into contact withthe peripheral surface of roller 18, to moisten the ribbon.

As stated, the roller 18 is movable with its plate 14 into two setpositions, it being operative in one of those positions, and inoperativein the other. In Fig. 1 the roller 18 is shown in its operativeposition, in which its surface is very near to the upended portion ofwire 27 which is a ribbon guide and controlling device, so that a veryslight movement of said ribbon guide, toward the roller, causes theribbon to make contact with said roller and thus to receive moisture orink therefrom. This slight motion of the guide is produced by a rockingmovement being in'lpa'rted to pawl 30 as it is struck by a passing typebar. It will be appreciated that the ribbon itself, coming from theribbon spool, exerts a light tension upon the guide which has the effectof with-- drawing the ribbon from contact with the roller surfaceimmediately the pawl is released by the retiring type bar, and also thatunder this ribbon tension the strand 27 acts on the pawl 30 to. rock thelatter out again in the path of the next striking type bar. Thereforethe ribbon inking or moistening operation is intermittent, and governed,in the operation of the machine, through the actuation of its type bars.

When a ribbon is new it may not be necessary to have the re-inking meansin operation, and therefore the roller 18 may be swung, by its plate 14,into its inoperative position, in which the roller 18 is removed agreater distance from the ribbon gu1de,and also the lug 20, havingengaged the jog 32 in strand 27, has caused said strand to rock pawl 30out of the path of the type bars, so that no movement is imparted to theink ribbon in the operation of the machine. In this shifted position ofthe plate 14 and roller l8'the latter is spaced too far from the ribbonto contact with the latter in the operation of the machine, so that theribbon receives no ink or moisture from the roller in the inactiveposition of the device.

The guard post 25 is intended to keep the ribbon out of contact with theroller 18 except at the point where it is held by the guide member 27.

Vhile my improved moistening and inking device is here shown inconnection with an Underwood machine. it may obviously be adapted foruse with other makes of typewriting machines.

Variations may be resorted to within the spirit and scope of myinvention and parts thereof used without others.

I claim 1. In a typewriting machine having a ribbon movable across theprinting point and a guide for the types, the combination of a revolubleinking pad, means for supporting said pad ,in proximity to said ribbon,and meanspivoted near said guide, to be actuated by the type bars inmoving the types to the printing point, to intermittently move saidribbon into contact with said pad.

2. The combination, with a typewriting machine having a ribbon movableacross the printing point and a guide for the types, of a revolubleinking pad, a movable support therefor, means pivoted near said guide tobe in the platen striking path of the type bars, and means engaging saidpivotal means and the ribbon to intermittently move the ribbon intocontact with said inking pad by the operation of the type bars.

3. The combination, with a typewriting machine having a ribbon movableacross the printing point, of a revoluble inking pad, a supporttherefor, means of adjustment for said pad whereby it may be set inoperative or inoperative position relatively to said ribbon, pivotalmeans. in the platen striking path of the type bars, and means engagingsaid pivotal means and the ribbon to intermittently move the ribbon intocontact with said inking pad by theoperation of said type bars.

4. The combination, with a typewriting machine having a ribbon movableacross the printing point, of a revoluble inking pad, a supporttherefor, means of adjustment for said pad whereby it may be set inoperative or inoperative position relatively to said ribbon, pivotalmeans in the platen striking path of the type bars, means engaging saidpivotal means and the ribbon to intermittently move the ribbon intocontact with said inking pad by the operation of the type bars, andmeans for shifting said pad to an inoperative position relatively tosaid ribbon.

5. The combination, with a typewriting machine having a ribbon movableacross the printing point, of a revoluble inking pad, a supporttherefor, means of adjustment for said pad whereby it may be set inoperative or inoperative position relatively to said ribbon, pivotalmeans in the platen striking path of the typevbars, means engaging saidpivotal means and the ribbon to intermittently move the ribbon intocontact with said inking pad by the operation of the type bars, means,for shifting said pad to an inoperative position relatively to saidribbon, and means actuated by said pad shifting means to remove saidpivotal means from the path of the'type bars.

6. The combination, with a typewriting machine having a ribbon movableacross the printing point, of an attachment comprising a base, said basehaving a bracket at one end for connection to the machine frame, and anextension at the opposite end for engagement with the type bar guidejaws, a plate pivoted to said base, said plate movable to two setpositions, a pivot extending upwardly from said plate, an inkin rollermounted on said pivot, a ribbon gui e upon saidbase, a strand of stiffmaterial to hold said ribbon in proximity to said roller when the platewhich supports said roller is in one set position, and a pawl pivoted tosaid base extension to lie operatively in the path of the type bars,said strand engaging said pawl to communicate movement from the latterwhen struck by a type bar, to thus draw the ribbon against its tensioninto contact with said inking roller.

7. The combination, with a typewriting machine having a ribbon movableacross the printing point, of an attachment comprising a base, said basehaving a bracket at one end for connection to the machine frame, and anextension at the opposite end for engagement with the type bar guidejaws, a plate pivoted to said base, said plate movable to two setpositions, a pivot extending upwardly from said plate, an inking rollermounted on said pivot, a ribbon guide upon said base, a strand of stiffmaterial to hold saidribbon in proximity to said roller when the plateupon which supports said roller is in one set position, a pawl pivotedto said base extension to lie, operatively.

in the path of the type bars, said strand engaging s aid pawl tocommunicate movement from the latter when struck by a type bar, to thusdraw the ribbon against its tension into contact with said inkingroller, and means for shifting said plate and the roller out ofoperative proximity to said ribbon, said means also serving to move saidpawl out of the path of the type bars.

Signed at the borough of Brooklyn, in the county of Kings and State ofNew York, this 22nd day of July A. D. 1919.

JAMES E. SIMPSON

